Questions tagged [lidar]

LIDAR (Light Detection and Ranging or Laser Imaging, Detection and Ranging) is an active optical remote sensing technology that measures properties of scattered light to find range and/or other information of a distant target.

I've created a DEM from LiDAR data. After combining all the files, I could see that there are some problems through the tile borders. This is an screen focused in one of the cross section of 4 files ...

When I use the LAS Dataset To Raster tool in ArcMap I get an unwanted interpolation outside of the actual study area, like this:
According to Esri this can be prevented by changing the definition of ...

I have a DSM derived from drone LiDAR that I want to use as a base to drape imagery and, paired with a DTM, as a basis for estimating canopy height/volume.
Unfortunately, the DSM has has many "spikes"...

I'm trying to create a 3D scatterplot using an las file that contains xyz and return values. I want to keep all returns but would like to subset the cloud. I've learned how to subset using laspy so no ...

I have imported LiDAR data into ArcMap in the shape of a Las DataSet with twelve .las files (contains over 100 million data points).
I believe the file itself is working properly. However, no points ...

I have LAZ files that I unpacked with laszip.exe, then I ended up with LAS files.
These files showed no error when making a LAS dataset in ArcGIS.
I used this dataset several times without ant issues....

According to the statistics and symbology of my LASD I have outliers. See below:
How can I locate them in ArcGIS 10.x and do further analysis with them? I cannot query the dataset or select point? So ...

I don't know how to install LAStools in QGIS 3.0. In QGIS 2.18, you can incorporate it as a provider in Processing -> Options-> Tools for LiDAR data (for example: Installing LAStools in QGIS 2.4?).
...

I am working with an existing DEM of a river and its surrounding area in QGIS (actually a virtual raster from four separate DEM TIF tiles).
My goal is to add a bridge's profile to the DEM. I have a ...

I am a rice farmer in Arkansas and would like to create levees along contour lines in a field at a .2 foot interval. How could I utilize LiDAR data to map 0.2 foot contour intervals across my area of ...

I am trying to learn LASPY and am running into road blocks off the bat. I first ran into and Error 8 (Not enough storage is available to process this command) using my full sized LAS file (1.7GB). I ...

I am running QGIS 2.18.14 (QGIS code revision: ff83b9a479) on a windows 7 machine, it comes with GRASS 7.2.2 (Code Revision r71496), but it does not come with r.in.lidar. I have noticed QGIS 2.18.16.1 ...

I have "dirty" LiDAR data containing first and last returns and also inevitably errors under and over the surface level. (screenshot)
I have SAGA, QGIS, ESRI and FME at hand, but no real method. What ...

I am looking to cross section my forest at varying heights. I have high return LAS data (8 points/m2 and average point spacing of 0.2m) and I am looking to do more than the simple 1, 2, 3 approach of ...

The attached screenshot shows a LiDAR point cloud with significant overlapping scans. This point cloud tile is part of the MN statewide LiDAR dataset which has 25% scan overlap and 1.5 NPS. For many ...

I wonder if someone can give me a hint on how to interpolate sparse data. I have a 1km by 1km tile located in a dense rain forest area.
Original LiDAR data are 37,395,021 points. I have played with ...

I have Downloaded a data set from udacity open source self driving car program
from here. It is a ROS (Robotic operating system) BAG file more info.The BAG file contains data collected from Velodyne ...

I have problems with filtering LiDAR data within geoprocessing tools and python scripts. It simply doesn't work despite everyting looks correct. Filtering works only when I apply filter in properties ...

I have an IDL-ENVI code to batch PointCloudFeatureExtraction for lidar tiles across a large area, however, when run, the output results in lower areas of each tile as "unprocessed".
So my question is ...

I have an unstructured point cloud of a street in LAS format (.las), scanned from a driving car. The point cloud also stores RGB information.
Is there any software that can convert the point cloud to ...

I am trying to use model builder to create a number of DEMs from LiDAR point clouds. To do so, I need to filter the point clouds for ground points only and then convert the points to raster. In the ...

First of all I would like to say, that I have checked all the open threads (with almost the same title) about r.in.lidar errors and in general GRASS and it's "raster map not found" errors within QGIS ...

I am using QGIS 2.18.2 Las Palmas on a MacBook Pro running OSX 10.13.1 High Sierra.
I followed Martin Isenburg's instructions how to install LAStools toolbox in QGIS
and the LAStools menu is available ...

I want to classify ground points from multiple LiDAR tiles (.las files) using MCC-LIDAR software.
I already made some research and I have found this sourceforge thread; however, it is not that clear (...